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Issue: Vol. 715 No. 1: 15 Aug. 2025
Type: Article
Published: 2025-08-15
DOI: 10.11646/phytotaxa.715.1.5
Page range: 72-80
Abstract views: 393
PDF downloaded: 11

Funneliformis huaxica, a new species of arbuscular mycorrhizal fungi (Glomeromycota) from Guiyang, China

College of Life Sciences/Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang 550025, Guizhou Province, China
Tongren No.1 Middle School of Guizhou, Tongren 554399, Guizhou Province, China
Tongren Polytechnic College, Tongren 554300, Guizhou Province, China
Guizhou Education University, Guiyang 550018, Guizhou Province, China
College of Life Sciences/Key laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guizhou University, Guiyang 550025, Guizhou Province, China
Molecular phylogeny Morphology new taxon rpb1 taxonomy 1 new species Fungi

Abstract

A new species of Funneliformis (Glomerales, Glomeromycota), was isolated from rhizosphere soil of Uncaria rhynchophylla in the Huaxi District of Guiyang City, China. Phylogenetic analyses based on nuclear rDNA sequences (spanning the partial small subunit, whole internal transcribed spacer, and partial large subunit segment; 18S-ITS-28S) and the largest subunit of RNA polymerase II (RPB1) confirmed that this isolate represents an undescribed species. Morphological and molecular data support its recognition as a distinct species, here proposed as F. huaxica sp. nov. The fungus forms spores singly in soil. Spores are pale yellow, spherical, sub-spherical to ellipsoidal, and occasionally irregular in shape. The spore wall is composed of three layers: a hyaline, evanescent outer layer (0.5–2.5 μm thick); a laminate middle layer (pale yellow to yellow-brown, 0.4–1.5 μm thick, thickening to 4.5 μm at the base); and an inner layer (about 0.6 μm thick, pale yellow to yellow-brown) tightly adherent to the middle layer. None of the wall layers reacted with Melzer’s reagent. Funneliformis huaxica is morphologically and phylogenetically distinct from its closest relative, F. geosporum.

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How to Cite

Suo, M.-Y., Long, C.-L., He, R.-J., Chen, D.-Y. & Jiang, L. (2025) Funneliformis huaxica, a new species of arbuscular mycorrhizal fungi (Glomeromycota) from Guiyang, China. Phytotaxa 715 (1): 72–80. https://doi.org/10.11646/phytotaxa.715.1.5